Optimizing the Ocular Surface Prior to Cataract Surgery

Inclusion Criteria: 1. Subjects with significant EBMD that are contemplating cataract surgery. 2. Age range: 50 years and older. 3. Both Genders and all ethnic groups comparable with the local community. 4. Subjects able to understand and willing to sign a written informed consent. 5. Subjects able and willing to cooperate with the investigational plan. 6. Subjects able and willing to complete postoperative follow-up. Exclusion Criteria: 1. Subjects with known intolerance to PKS or known allergy to its preservative media. 2. Subjects with symblepharon or lid abnormality preventing PKS placement. 3. Ocular infection within 14 days prior to study entry. 4. Previous ocular surgery or injury within 3 months before enrollment. 5. Subjects with a history of non-healing epithelial defect or neurotrophic keratitis. 6. Inability or unwillingness of subject to give written informed consent, follow investigational plan or complete postoperative follow-up.